Cottonwood Lake township
- County:
- Edmunds County
- County Seat:
- No
- Area (mi²):
- 34.912
- State:
- South Dakota
Cottonwood Lake township is located in Edmunds County, South Dakota. Cottonwood Lake township has a 2026 population of 40. Cottonwood Lake township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 40 in 2020.
The median age in Cottonwood Lake township is 40.8 years: 46.5 years for males, and 40.3 years for females. For every 100 females there are 112.5 males.